The Epaulette Mate is named after the shoulder decorations on military uniforms: the king stands with its own two rooks on either shoulder, and those loyal bodyguards are exactly what kill it, occupying both escape squares while a queen checks from directly in front.
The queen doesn't even need protection, she mates from a distance of one full square, covering the three squares in front of the king while the rooks block the two beside it. It's the purest example of a piece being smothered by its own army, the same theme as the smothered mate but out in the open.
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Black's king wears its rooks like epaulettes on d8 and f8, blocking both sideways escapes.
The rooks block their own king's shoulders. Mate it from the front.
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